Printing-press.



I Patemew-Ia'n. 9; |900. G. .-l. ULSEN.

PRINTING PRESS.

(Application filed Apr. 11, 189B.)

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No. 640,8m.

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a. J. oLsEN. PRNTING PRESS. (Applikation mali Apr. 11, 189B.)

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'PRINTING PRESS- (Applieacion med Apr. 11, 189s.) (No Model.) 4 Sheets$heet 3.

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PRINTING PRESS. (Appliation led Apr. 11, 1898.)

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4UNITED STATES PATENT Ormea.

GULBRAND J. OLSEN, OF NEW YORK, N .i Y., ASSIGNOR TO ROBERT HOE, THEODORE H. MEAD, AND CHARLES W. CARPENTER, OF SAME PLACE.

PRINTING-PRESS.

sPncIFIoATIoN forming part of Letters Patent No. 640,801, dated January 9, 190e. Appeals.. ned Apni 11, 139s. seen No. 677,126. on moana To @Z w/wm it 11mg/ concern:

Be it known that I, GULBRAND J. OLsEN, a subject of the King of Sweden and Norway, residing at New York city, county of Kings, and State of New York, have invented certain new and useful Improvements in Printing-Presses, fully described and represented in the following specification and the accompanying drawings, formingapart of the same.

This invention relates to cushioning devices for bed-and-cylinder machines, and concerns itself more particularly with the application of cushioning devices to the cylinders of those classes of machines in which the cylinder is caused to stop periodically during its rotation.

The invention has for its object to provide simple and practical means by which cushioning devices may be applied to the cylinders of all forms of bed-and-cylinder machines in which the cylinder is brought to a stop after each printing operation and is then again started.

A further object of the invention is to provide mechanism by which cushioning devices may be applied to the cylinders of all types of bed-and-cylinder machines where the cylinder is stopped after each printing operation, the said cushioning devices acting to assist in bringing the cylinder to a stop and being so arranged that the energy developed in the cushioning devices by the stoppage of the cylinder may be utilized and expended in starting the cylinder for the next printing operation.

The invention is more particularly applicable to that class of machines commonly known in the art as stop-cylinder machines-that is, machines in whichthe cylinder is brought to a stop after the bed has made a stroke in one direction and a printing operation has been thus completed by the bed and cylinder, the cylinder then remaining quiescent until the bed has returned and the parts have come into position for a second printing operation. In its broader form, however, the invention is applicable to other forms of cylinder-machines in which the cylinder is stopped after each printing operation and is again started for a succeeding printing operation.

lVith the objects above named and other objects in view the invention consists in certain constructions and in certain parts, im'- provements, and combinations, which will be hereinafter fully described and then pointed out in the claims hereunto appended.

In the accompanying drawings, which form a part of this specification, and in which like characters of reference indicate the same parts, Figure l is a side view of a stop-cylinder press embodying my invention. Fig. 2 is an end view of the same, showing two of the air-cushion cylinders. Fig. 3 is a plan view of a portion of the same. Fig. 4 is a sectional view of the mechanism concerned in the application of the air-cushion device to the cyl-I inder. Fig. 5 is a side elevation of the same,

and Figs. 6 and 7 are diagrams showing dif- Y ferent positions of the last-mentioned parts.

Referring to said drawings, A is the frame of the press, and B the reciprocating bed, operated by the gear-wheel O, engaging with the fixed rack D and connected by link E with the crank-wheel F. Plungers Gr are attached to the reciprocating bed and the air-cushioncylinders H to the frame and are so placed with reference to each other at each end of the frame and bed, respectively, that the plungers enter their respective cylinders at the .end of each stroke of thebed.

The cylinder I is rotated from the bed by means of the ordinary rack-and-gear construction. On one end of the cylinder-shaft is fixed a support which is preferably in the form of a crank-disk J. This crank-disk .I carries a pin j, and upon this pin is pivoted the plunger lo of the air-cushioning device. A short shaft O is suitably mounted in the frame of the machine, this shaft being preferably so located that its center of revolution is opposite the circumference described by the pin upon which the plunger la is pivoted. The shaft O carries a support which is preferably in the form of a wheel L and is also preferably arranged so that it makes a halfrevol'ution in the time that the impressioncylinder and its shaft make one revolution. While this rotation may be accomplished in various ways, it is preferably eected by providing the wheel L with gear-teeth and connecting it by a train of gears to the crank- IOO wheel F. rihe other part of the cushioning device-viz., the air-chamber K-is trunnioned at k3 to the Wheel L.

The operation of the device Will be best understood by reference to the diagrams Figs. 6 and 7. The larger circle represents the disk J and the smaller circle represents the circular path of the trunnion k2. Fig. 6 represents the position of the parts when the impression-cylinder is on the point of corninencing its rotation. For convenience intersections have been made upon the larger circle and half of the smaller circle, and these intersections have been respectively connected by lines indicating the position of the piston-rod at successive instants of time, these instants being separated from each `other by a distance corresponding to cnefortieth of a revolution of the wheel L. Thus after the Wheel L has revolved one-fortieth of 'an entire revolution from the position shown in Fig. 6 the position of the pin j will be at the point marked l on the circumference of the larger circle, and the trunnion of the aircnshion cylinder will be at the point marked l on the circumference of the smaller circle, and the position of the piston-rod Will be the line l l. Similarly when the wheel L has revolved from the position shown in Fig. 6 a distance corresponding to twoortieths of an entire revolution the position of the pistonrod will be represented by the line 2 2, and so on. The compressed air in the piston when the parts are in the position shown in Fig. 6 will aid the revolution of the impression-cylinder by its expansion. The piston will pass through its position of maximum extension from the cylinder and a little before it reaches the position shown in Fig. 7 will begin to return, and when it reaches the position indicated by line 2O 2O the impression-cylinder will have stopped, its stoppage being assisted bythe action of the cushioning device. The aircylinder will noW revolve about the pivot j without affecting the operation of the mechanism While the im pression-cylinder is at rest and until the parts reach the position shown in Fig. 6, when the operation above described will be repeated. lt Will therefore be seen that the air-cylinder serves to bring the i1npression-cylinder to a cushioned stop each time the impression-cylinder stops, and the energy developed in the cushioning device by the compression of the air serves to assist in starting the impression-cylinder. y

It will of course be understood that the disk J may be replaced by an arm extending from the shaft of the cylinder I and likewise that the disk L may be replaced by an arm revolving upon the shaft O, driven by appropriaie gearing. If preferred, the piston may be pivoted to disk L and the cylinder to disk J instead of as shown.

Various other modifications of the construction are also possible, and it is to be understood, therefore, that the invention is not limited to the specific devices described in the foregoing specification and illustrated in the accompanying drawings.

What I claim is- 1. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder, of a cushioning device, means for causing said device to assist in stopping and starting the cylinder, the construction being such that the energy developed in the cushioning device by stopping the cylinder is utilized in startd ing it, substantially as described.

2.A In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder, of a cushioning device consisting of two movable parts, means for causing said parts to exert a resistance to the rotation of the cylinder when it is stopped, the construction being such that the energy developed in said cushioning device by the stopping of the cylinder is utilized in starting it, substantially as described.

3.- In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder, of an air-cushioning device,ineans for bringingsaid deviceinto operation when the cylinder is stopped and started, the air in the cushioning device being compressed when the cylin` der is stopped and allowed to expand when it is started, the construction being such that the energy developed in stopping the cylinder is utilized in starting it, substantially as described.

4. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, of a cushioning device, a part of which is connected to the cylinder and shaft, and means-for bringing said device into operation when the cylinder is stopped and started, the construction being such that the energy developed in the cushioning device by the stop-V ping of the cylinder is utilized in starting it, substantially as described.

5. Y In a bed-'and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, of an air-cushioning device consisting of a piston and an air-chamber, one of these parts being connected to the cylinder and its shaft and the other suitably supported with relation thereto, and means for causing the cylinder to compress the air in the air-chainber when the cylinder is stopped, the construction being such that the air in the airchamber is retained under compression and the force thus developed is utilized when the cylinderis started, substantially as described.

d. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the IOO IIC

same direction, of an air-cushioning device consisting of a piston and an air-chamber, one of these parts being connected to the cylinder audits shaft and the other being suitably supported in proximity thereto, the arrangement being such that the air in the air-chamber is compressed when the cylinder is stopped, and means whereby the position of the chamber and piston are changed with relation to the cylinder so that the force developed by compressing the air in the chamber when the cylinder is stopped may be utilized in starting the cylinder, substantially as described.

7. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a second rotating shaft, and a cushioning device, the parts of which are connected to the two shafts, the arrangement being such that the cushioning device is brought into operation when the cylinder is stopped and started, the energy developed in the cushioning device by stopping the cylinder being utilized in starting it, substantially as described.

8. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a second rotating shaft, and an air-cushioning device consisting of a piston and an air-chamber, one of the said parts being connected to the cylinder and its shaft and the other to the rotating shaft, and the arrangement being such that the air is compressed in the chamber when the cylinder is stopped and the force thereby developed is utilized when the cylinder is started, substantially as described.

9. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a second shaft, means for rotating said shaft at half the speed of the cylinder-shaft, a cushioning device, and suitable connections between the parts of the cushioning device and the shafts whereby the parts of the cushioning device are caused to rotate with the shafts, substantially as described.

10. Inabed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a second shaft, means for 'rotating it at half the speed of the cylindershaft, a cushioning device consisting of an airchamber'and piston, and suitable connections between the piston and one of the shafts and between the air-chamber and the other shaft whereby the parts of the cushioning device are caused to rotate with the shafts, substantially as described.

11. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a second shaft, means for rotating it-'at half the speed of the cylindershaft, supports connected to each ofthe shafts and rotating with them, and a cushioning device, the parts of which are pivoted to the supports, substantially as described.

12. In a bed-and-cylinder machine wherein the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a second shaft, means for rotating it at half the speed of the cylindershaft, supports connected to each of the shafts and rotating with them, and a cushioning device consisting of a piston and an air-chamber, the piston being pivoted to one of said supports and the air-chamber to the other, substantially as described.

13. In a bed-and-cylinder machine wherei the cylinder is periodically stopped and started, the combination with the cylinder and its shaft, said cylinder always rotating in the same direction, of a support connected to the cylinder-shaft and rotating therewith, a cushioning device one part of which is pivoted to said support, a second shaft mounted so that its center of rotation will be opposite the circumference described by the pivot between the support and said part of the cushioning device, means for rotating the shaft at half the speed of the cylinder-shaft, asupport connected to and rotating with said shaft, and a pivoted connection between said support and another part of the cushioning device, substantially as described.

14. In a stop-cylinder machine, the combination with the cylinder and its shaft, of a support connected toy and rotating with the shaft, a second shaft, a support connected to and rotating with said shaft, a cushioning device, lthe parts of which are connected to said two supports, the shafts being so located and arranged that the cushioning device will be brought into operation to assist in stopping the rotation ofA the cylinder and the force developed in the cushioning device will be utilized in starting the cylinder, substantially as described.

15. In a stop-cylinder machine, the combination with the cylinder and its shaft, of a support connected to and rotating with the shaft, a cushioning device consisting of a piston and an air-chamber, one of the parts of which is pivoted to said support, a second shaft mounted so that its center of rotation is opposite the circumference described by the point of connection between the support and the part of the cushioning device, a support on said shaft to which the other part of the cushioning device is pivoted, and means for rotating said shaft at half the speed of the cylinder-shaft, substantially as described.

16. In a stop-cylinder machine, the combination with the cylinder and its shaft, of a support mounted on the shaft, a piston piv- IOO IIO

IIS

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oted to said support, a second shaft mounted so that its Center of rotation will be opposite the circumference described by the point of eonueeton between the pivot and the support, a, support on said shaft, au air-chamber pivoed to said support, and means for rotating said shaft; at half the speed of the cylindershaft, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing :c witnesses.

GULBRAND J. OLSEN,

Witnesses:

T. F. KEHOE, G. M. BURSTi 

